This chapter provides detail description of Intracavernous aneurysms. Chapter has 4 well illustrated diagrams and pictures. Intracavernous aneurysms, clinical features of intracavernous aneurysms: cranial neuropathy, subarachnoid haemorrhage, epistaxis, transient ischemic attacks, investigations of intracaversnous aneurysms, methods of treatment of intracavernous aneurysms: endovascular technique, direct surgical method, indirect surgical method, external carotid-internal carotid bypass, superficial temporal artery to middle cerebral artery anastomosis, post-operative management of intracavernous aneurysms, complications of intracavernous aneurysms, graft problems and treatment of graft occlusion are described in detail. 31 references are included at the end of the chapter to facilitate further reading.